Picking roll

Abstract

A picking roll for engaging a standing agricultural plant, has a picking section for tangentially pulling in the standing plant. The picking section is divided into a first picking portion and a second picking portion. The first picking portion is driven at a first rotational speed and the second picking portion is driven at a second rotational speed that is different from the first rotational speed.

1 . A picking roll that can be rotated comprises a picking section for tangential pulling in a plant, the picking section having a first portion that is driven at a first speed and a second portion that is driven at a second speed, the first and second speeds being different.  
     
     
         2 . A picking roll as defined by  claim 1  wherein the first portion is cylindrical having a first diameter and the second portion is cylindrical and has a second diameter.  
     
     
         3 . A picking roll as defined by  claim 2  wherein the first diameter is substantially the same as the second diameter.  
     
     
         4 . A picking roll as defined by  claim 3  wherein the first portion is arranged downstream from the second portion, the first speed being higher than the second speed.  
     
     
         5 . A picking roll as defined by  claim 5  wherein a third portion of the picking section is driven at a third speed that differs from the first and second speeds.  
     
     
         6 . A picking roll as defined by  claim 4  wherein the second portion is driven by a shaft that extends through the first portion.  
     
     
         7 . A picking roll as defined by  claim 4  wherein the second portion is driven by a hollow shaft having a shaft that extends through the hollow shaft to drive a feed auger mounted in front of the picking section, the feed auger being coaxial to the second portion.  
     
     
         8 . A picking roll as defined by  claim 5  wherein the second portion is driven by a hollow shaft having a shaft that extends through the hollow shaft to drive the third portion of the picking section mounted in front of the second portion, the third portion being coaxial to the second portion.  
     
     
         9 . A picking roll as defined by  claim 4  wherein the second portion is driven by planet gears located in the interior of picking roll.  
     
     
         10 . A picking roll as defined by  claim 5  wherein the third portion is driven by the planet gears located in the interior of picking roll.  
     
     
         11 . A picking roll as defined by  claim 4  wherein the second portion has external gearing that cooperates with a drive pinion.  
     
     
         12 . picking roll as defined by  claim 5  wherein the third portion has external gearing that cooperates with a drive pinion.  
     
     
         13 . A picking roll as defined by  claim 1  wherein the first portion is arranged downstream from the second portion, the first speed being higher than the second speed.  
     
     
         14 . A picking roll as defined by  claim 14  wherein a third portion of the picking section is driven at a third speed that differs from the first and second speeds.  
     
     
         15 . A harvesting machine comprising: 
 a frame,    a picking roll being rotatively mounted to the frame, the picker roll having a picking section for tangential pulling in a plant, the picking section having a first portion that is rotatively driven at a first speed and a second portion that is rotatively driven at a second speed, the first and second speeds being different.    
     
     
         16 . A harvesting machine as defined by  claim 15  wherein the first portion is arranged downstream from the second portion, the first speed being higher than the second speed.  
     
     
         17 . A harvesting machine as defined by  claim 16  wherein a third portion of the picking section is driven at a third speed that differs from the first and second speeds.  
     
     
         18 . A harvesting machine as defined by  claim 16  further comprising a gathering element for directing a standing plant to the picking roll.  
     
     
         19 . A harvesting machine as defined by  claim 18  further comprising a second picking roll being rotatively mounted to the frame and arranged parallel to the picking roll.  
     
     
         20 . A harvesting machine as defined by  claim 19  wherein the second picking roll has a picking section for tangential pulling in a plant, the picking section of the second picking roll having a first portion that is rotatively driven at a first speed and a second portion that is rotatively driven at a second speed that is different from the first speed.